CN211698755U - Program-controlled power supply with battery characteristic simulation function - Google Patents
Program-controlled power supply with battery characteristic simulation function Download PDFInfo
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- CN211698755U CN211698755U CN202020501104.1U CN202020501104U CN211698755U CN 211698755 U CN211698755 U CN 211698755U CN 202020501104 U CN202020501104 U CN 202020501104U CN 211698755 U CN211698755 U CN 211698755U
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Abstract
The utility model relates to a program-controlled power supply with battery characteristic analog function. The utility model comprises a power unit and a control unit; the input end of the power unit is connected with a power grid through an alternating current interface, and the output end of the power unit is connected with electric equipment through a direct current interface; the control unit comprises a control module, a man-machine interface and a signal detection and conditioning module; the control module is connected with the human-computer interface and the signal detection and conditioning module; the signal detection conditioning module is connected with the power unit. The utility model discloses outside having the adjustable function of voltage, current output of ordinary programmable power supply, can also simulate the capacity decay characteristic of battery, it can realize the simulation to multiple type, different specification battery capacity service characteristics through the leading-in battery model of human-computer interface, estimates energy consumption in the programmable power supply arbitrary time, simulation battery power supply that can be more true.
Description
Technical Field
The utility model relates to a programme-controlled power technology field, specific programme-controlled power with battery characteristic simulation function that says so.
Background
With the rapid development of power electronics, rare earth materials and control technologies, motor drive systems are more and more widely applied. Batteries are one of the main ways to supply energy to motor-driven systems, and are widely used in mobile devices, such as the field of electric vehicles. The batteries are various, such as thermal batteries, zinc-silver batteries, lithium batteries and the like, and can be used for one time or can be charged for multiple times.
In the development process of the motor driving system, a large number of debugging tests are often required, and due to the influences of multiple aspects such as the development period of a battery, the cost and the like, the debugging of the motor driving system is mostly powered by a ground program control power supply. However, the current ground programmable power supply can only set parameters such as output voltage, maximum output current and the like, cannot set battery capacity, and cannot simulate a battery capacity attenuation process. The performance index of the motor driving system measured when the ground programmable power supply supplies power is deviated from the performance index measured when the real battery supplies power, so that the characteristic of the motor driving system when the battery supplies power is difficult to be comprehensively simulated through the ground programmable power supply in the performance debugging process of the motor driving system with high precision requirement.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned weak point that exists among the prior art, the to-be-solved technical problem of the utility model is to provide a programmable power supply with battery characteristic analog function, except having the adjustable function of voltage, current output of ordinary programmable power supply, can also simulate the capacity decay characteristic of multiple type battery, simulation battery power supply type motor-driven system that can be more true is experimental.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a program-controlled power supply with a battery characteristic simulation function comprises a power unit and a control unit; the input end of the power unit is connected with a power grid through an alternating current interface, and the output end of the power unit is connected with electric equipment through a direct current interface; the control unit comprises a control module, a man-machine interface and a signal detection and conditioning module; the control module is connected with the human-computer interface and the signal detection and conditioning module; the signal detection conditioning module is connected with the power unit.
The power unit comprises a three-phase alternating current socket, a three-phase breaker, a rectifier, a filter, a power supply conversion controller and a power supply output socket which are connected in sequence; the power supply conversion controller is connected with the signal detection conditioning module.
The power supply conversion controller comprises a voltage conversion module and an output current limiting control module; the input end of the voltage conversion module is connected with the filter, and the output end of the voltage conversion module is connected with the output current limiting control module; the output current-limiting control module is connected with a power output socket.
The control module comprises a simulated battery residual capacity estimation module, a voltage instruction generation module, a simulated battery internal resistance voltage drop module and a digital signal processor; the analog battery residual capacity estimation module, the voltage instruction generation module and the analog battery internal resistance voltage drop module are connected with the digital signal processor, and the digital signal processor is used for being connected with the signal detection conditioning module and the human-computer interface.
The utility model has the advantages of it is following and beneficial effect:
1. the utility model discloses outside having the adjustable function of voltage, current output of ordinary programmable power supply, can also simulate the capacity decay characteristic of battery, it can realize simulating multiple type, different specification battery capacity service characteristics through the leading-in battery model of human-computer interface, can estimate programmable power supply energy consumption in the arbitrary time, simulation battery power supply that can be more true.
2. The utility model discloses can realize the simulation to battery internal resistance pressure drop, the simulation of internal resistance is not through the hardware realization, is realized through software algorithm, can reduce the consumption, raises the efficiency, and it is convenient to modify, can realize the simulation to various battery internal resistances.
3. The utility model discloses an output voltage regulation control and output current-limiting control are realized to voltage, electric current dicyclo control mode, have improved the safety in utilization of equipment, and output voltage's instruction has been calculated the analog control precision of consumer both ends voltage with energy consumption correspondence voltage drop and the internal resistance voltage drop by the simulation battery.
Drawings
Fig. 1 is an overall structure diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, a programmable power supply with a battery characteristic simulation function mainly includes a control unit and a power unit, where the power unit has a 380V ac interface with a power grid, and the power unit has a dc voltage interface with a power load. The control unit comprises a control module, a signal detection and conditioning module, a human-computer interface and the like, wherein the control module mainly comprises a digital signal processor, an analog battery residual capacity estimation module, an analog battery internal resistance voltage drop module, a voltage instruction generation module and the like. The control module and the man-machine interface realize bidirectional communication through a bus, and the control module and the signal detection and conditioning module realize signal interconnection through an analog signal and an I/O interface. The signal detection and conditioning module detects signals such as output voltage, output current and temperature of the power supply conversion controller through the sensor, conditions the signals and sends the signals to the control module, and the signal detection and conditioning module further performs signal conditioning on an output voltage instruction sent by the control module and sends the output voltage instruction to the power supply conversion controller. On one hand, the temperature signal is sent to a man-machine interface for state monitoring, and on the other hand, when the temperature is too high, the output current-limiting control module can turn off the output to protect the programmable power supply. The simulation battery residual capacity estimation module, the simulation battery internal resistance voltage drop module and the voltage instruction generation module are functionally realized through a digital signal processor; the simulation battery residual capacity estimation module calculates power output energy within a certain period of time according to the collected output voltage and current values, estimates residual capacity (voltage is multiplied by integral of current over time) according to a selected battery model, calculates voltage drop of the battery according to the characteristics of the battery (voltage drop corresponding to attenuation of the battery capacity can be obtained by looking up a table through the battery model), obtains internal resistance voltage drop (current is multiplied by internal resistance) according to the model of the battery and an actually measured current value, subtracts the voltage drop generated by battery capacity attenuation and the voltage drop of the internal resistance of the battery from voltage required to be output provided by a man-machine interface by the voltage instruction generation module, and sends the obtained result as a voltage instruction to the power supply transformation controller.
The power unit mainly comprises a three-phase alternating current socket, a three-phase breaker, a rectifier, a filter, a power supply conversion controller, a power supply output socket and the like, wherein the power supply conversion controller comprises a power supply conversion module and an output current limiting control module. The three-phase 380VAC power grid is connected with a three-phase alternating current socket firstly, the three-phase alternating current socket is connected with a three-phase breaker, the three-phase breaker is connected with a rectifier, the rectifier is connected with a filter, the filter is connected with a power supply transformation controller, the power supply transformation controller is connected with a power supply output socket, and the power supply output socket is connected with electric equipment finally. The power supply conversion controller is used for adjusting according to an output voltage instruction and the maximum output current input by the control unit, the output voltage regulation control is realized in a voltage and current double-loop control mode, a constant voltage control mode is adopted when the output current does not reach a current limiting value, and a constant current control mode is switched when the voltage reaches the current limiting value, so that the use safety of equipment is improved.
Claims (4)
1. A program-controlled power supply with a battery characteristic simulation function is characterized by comprising a power unit and a control unit; the input end of the power unit is connected with a power grid through an alternating current interface, and the output end of the power unit is connected with electric equipment through a direct current interface; the control unit comprises a control module, a man-machine interface and a signal detection and conditioning module; the control module is connected with the human-computer interface and the signal detection and conditioning module; the signal detection conditioning module is connected with the power unit.
2. The programmable power supply with battery characteristic simulation function according to claim 1, wherein the power unit comprises a three-phase ac socket, a three-phase breaker, a rectifier, a filter, a power conversion controller and a power output socket which are connected in sequence; the power supply conversion controller is connected with the signal detection conditioning module.
3. The programmable power supply with battery characteristic simulation function of claim 2, wherein the power conversion controller comprises a voltage conversion module and an output current limit control module; the input end of the voltage conversion module is connected with the filter, and the output end of the voltage conversion module is connected with the output current limiting control module; the output current-limiting control module is connected with a power output socket.
4. The programmable power supply with the battery characteristic simulation function according to claim 1, wherein the control module comprises an analog battery residual capacity estimation module, a voltage instruction generation module, an analog battery internal resistance voltage drop module and a digital signal processor; the analog battery residual capacity estimation module, the voltage instruction generation module and the analog battery internal resistance voltage drop module are connected with the digital signal processor, and the digital signal processor is used for being connected with the signal detection conditioning module and the human-computer interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020501104.1U CN211698755U (en) | 2020-04-08 | 2020-04-08 | Program-controlled power supply with battery characteristic simulation function |
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| CN202020501104.1U CN211698755U (en) | 2020-04-08 | 2020-04-08 | Program-controlled power supply with battery characteristic simulation function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816809A (en) * | 2020-12-29 | 2021-05-18 | 中通客车控股股份有限公司 | Power battery simulation system and method for whole vehicle working condition test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816809A (en) * | 2020-12-29 | 2021-05-18 | 中通客车控股股份有限公司 | Power battery simulation system and method for whole vehicle working condition test |
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